Dell P5524QT 55" UHD 4K Touchscreen Commercial Monitor - Manual (Page 42)

42 | Operating the display
Using the OSD lock function
1. Press the OSD launcher touch key.
1 2 3 4 5 6 7
2. Touch and hold for 5 seconds. you can see following select option:
Dell 55 Monitor
Select Option:
The following table describes the touch control icons:
Options Description
1
OSD menu lock
Use this icon to lock OSD menu function.
2
Power-off button lock
Use this icon to lock power button from powering
off.
3
OSD menu and power
button lock
Use this icon to lock OSD menu and power button
from powering off.
4
Built-in Diagnostics
Use this icon to run the built-in diagnostics, see
Built-in Diagnostics .